초록 |
A series of p-type polymers, Naphtho[2,1-b:3,4-b′]dithiophene derivatives (NDT), with enforced coplanar structure for effective π- electron delocalization having naphtho[2,1-b:3,4-b′]- dithiophene and another acceptor units were successfully synthesized by Stille coupling reaction. The naphtho[2,1-b:3,4-b′]dithiophene unit of the polymer main chain enhances charge carrier mobility by extending ㅠ-conjugation length and rigidly enforced coplanar structure. NDT-based polymers investigated their TFT characteristics. |